0:00:05 > 0:00:08# If you've got a question and you don't know where to go
0:00:08 > 0:00:11# Ask Nina for some help cos she's got a science show
0:00:11 > 0:00:14# She makes sense of her senses While helping all her fans
0:00:14 > 0:00:17# By doing her experiments with potions and with bangs
0:00:17 > 0:00:19- # Touch your tongue - Tongue!
0:00:19 > 0:00:21- # Fingers - Fingers!
0:00:21 > 0:00:23- # Eyes- Eyes! - Ears- Ears!- Nose- Nose!
0:00:23 > 0:00:28# Every day we use our senses Wherever we may go
0:00:30 > 0:00:31- # Tongue - Tongue!
0:00:31 > 0:00:32- # Fingers - Fingers!
0:00:32 > 0:00:36- # Eyes- Eyes! - Ears- Ears!- Nose- Nose!
0:00:36 > 0:00:39# Nina and the Neurons find out what you need to know
0:00:39 > 0:00:42# Nina and the Neurons find out what you need to know
0:00:42 > 0:00:45# Luke, he helps us with our eyes and Felix with our touch
0:00:45 > 0:00:48# Ollie sniffs out smells And Belle, she hears so much
0:00:48 > 0:00:51# Bud is Ollie's brother he helps us with our taste
0:00:51 > 0:00:54# They're Nina's little neurons And they're coming to your place!
0:00:54 > 0:00:55- # Touch your tongue - Tongue!
0:00:55 > 0:00:56- # Fingers - Fingers!
0:00:56 > 0:01:00- # Eyes- Eyes! - Ears- Ears!- Nose- Nose!
0:01:00 > 0:01:03# Nina and the Neurons find out what you need to know
0:01:03 > 0:01:06# Nina and the Neurons find out what you need to know
0:01:06 > 0:01:07# Oh, yeah! #
0:01:08 > 0:01:11- Hi, everyone!- Hi, Nina!
0:01:11 > 0:01:13In these bottles here,
0:01:13 > 0:01:16I have some cold water and some hot water.
0:01:16 > 0:01:20I've added colouring to tell the difference. Red is hot
0:01:20 > 0:01:23- so that means blue must be...- Cold!
0:01:23 > 0:01:27So first of all, I'm going to pick up a cold water bottle,
0:01:27 > 0:01:30put a piece of plastic over the top
0:01:30 > 0:01:37and turn it over. Then I'm going to sit it on the hot water bottle.
0:01:37 > 0:01:42What do you think will happen when we take the plastic away?
0:01:42 > 0:01:44It'll mix? Well, let's see.
0:01:47 > 0:01:53Look at that, guys! It IS mixing up, you're absolutely right.
0:01:53 > 0:01:57Can you hold that? I'm going to pick up the hot water bottle,
0:01:57 > 0:02:01pop some plastic over the top again and turn it over!
0:02:01 > 0:02:06Now I'm going to sit it on the cold water. There we go.
0:02:06 > 0:02:11What will happen this time? Will the colours mix together?
0:02:11 > 0:02:13- Yes!- No!
0:02:13 > 0:02:18I just need to take the plastic out. Please don't spill everywhere!
0:02:18 > 0:02:23Look, the colours are not mixing together. They're staying
0:02:23 > 0:02:28exactly where they are. This is because hot water is lighter
0:02:28 > 0:02:31than cold water so hot water rises up.
0:02:31 > 0:02:36In these bottles, the hot's already at the top so it stays where it is.
0:02:36 > 0:02:40But when the bottles are the other way around like here,
0:02:40 > 0:02:44the hot water was at the bottom so it rose up,
0:02:44 > 0:02:47and the cold water was at the top and it sunk down.
0:02:47 > 0:02:51They swapped places and the colours mixed!
0:02:52 > 0:02:55BEEPING
0:02:55 > 0:03:00I hear a beep, I see a flash, I wonder what they're going to ask?
0:03:03 > 0:03:08Hi, Nina! My name's Matthew, I've got a question for you.
0:03:08 > 0:03:12- How do I make my tent warmer? - That's a great question.
0:03:12 > 0:03:15How can I make my tent warmer? Hmm.
0:03:15 > 0:03:18I think we'll have lots of fun finding this out.
0:03:18 > 0:03:24- I'll be round soon to answer your question.- Bye, Nina!- Bye.
0:03:24 > 0:03:29I'll need some help to answer this one and I know just who to ask.
0:03:29 > 0:03:32OK, Neurons, time to get to work!
0:03:47 > 0:03:49Neurons at the ready, Nina.
0:03:49 > 0:03:53OK, today's question is how can I make my tent warmer?
0:03:53 > 0:03:57Which Neuron do you think will help us find the answer?
0:03:57 > 0:04:00- Me!- Me, me!- Me!- Me.
0:04:00 > 0:04:03'Will it be fabulous Felix?'
0:04:03 > 0:04:07I can help so very much if you need the sense of touch.
0:04:07 > 0:04:11- 'Will it be beautiful Belle?' - I send messages to brain to ear.
0:04:11 > 0:04:15- If there's a sound, I'll help you hear.- 'Will it be Luke?'
0:04:15 > 0:04:20For looking and seeing day or night, I'll help with your sense of sight.
0:04:20 > 0:04:25- 'Will it be Ollie?'- If it's pongy or whiffy and you can't tell,
0:04:25 > 0:04:29- my messages help your sense of smell.- 'Or will it be Bud?'
0:04:29 > 0:04:33Sour, salty, bitter or sweet, I'm your taste buddy when you eat.
0:04:37 > 0:04:40'It's Felix!' CHILDREN CHEER
0:04:40 > 0:04:42Go, Felix! Go, Felix!
0:04:42 > 0:04:46Go, Felix! Go, Felix! Go, Felix! Go, Felix!
0:04:46 > 0:04:52- Go, Felix!- Marvellous. A little touch can mean so much, Nina.
0:04:52 > 0:04:56Thanks, Felix. Today's question is how can I make my tent warmer?
0:04:56 > 0:05:00Because being warm is something we feel, Felix will help us.
0:05:00 > 0:05:04But stand by, Neurons, I may need you all today.
0:05:05 > 0:05:08OK! Let's go.
0:05:28 > 0:05:33These two friends will be finding out all about keeping warm.
0:05:33 > 0:05:36Warm tent, warm hands, warm feet and warm toes.
0:05:36 > 0:05:40So today for one day only, Matthew and Bethany become...
0:05:40 > 0:05:42The Experimenters!
0:05:45 > 0:05:48- Hi, Matthew and Bethany!- Hi, Nina!
0:05:48 > 0:05:52Thanks for your brilliant question - how can I make my tent warmer?
0:05:52 > 0:05:56- Why did you ask that? - We love our tent, but it gets cold.
0:05:56 > 0:06:00Tents are brilliant fun to play in, but they can get cold,
0:06:00 > 0:06:04especially in the winter. To answer your question,
0:06:04 > 0:06:09we need to find out more about hot and cold. Let's go!
0:06:11 > 0:06:13In these three beakers,
0:06:13 > 0:06:17we have water at different temperatures - one is warm,
0:06:17 > 0:06:21one is cold and one is in-between. Just by looking at them,
0:06:21 > 0:06:25can you tell which one's hot and which one's cold?
0:06:25 > 0:06:28- They all look the same. - That is pretty difficult.
0:06:28 > 0:06:31It's hard to see how hot or cold something is.
0:06:31 > 0:06:33Do you know what this is?
0:06:33 > 0:06:36- No, Nina.- It's a thermometer.
0:06:36 > 0:06:39That's a gadget we use in science to tell
0:06:39 > 0:06:41temperature without touching it.
0:06:41 > 0:06:46- Do you see the blue line in the middle of the thermometer?- Yes.
0:06:46 > 0:06:50When it's short and down at the bottom,
0:06:50 > 0:06:54it means something is cold. When the blue line is long,
0:06:54 > 0:06:59up towards the top, it means something is hot.
0:06:59 > 0:07:01And there's a sun to show hot.
0:07:01 > 0:07:05- Where's the blue line now? - In the middle.- Next to the house.
0:07:05 > 0:07:08That's because the room we're in right now
0:07:08 > 0:07:12is neither hot nor cold, it's what we call room temperature.
0:07:12 > 0:07:15- So, how are you feeling now? - Just right.
0:07:15 > 0:07:18The room is just the right temperature.
0:07:18 > 0:07:22Not all hot and sticky or too cold and shivery. Perfect!
0:07:22 > 0:07:27We agree room temperature is the best temperature to be in.
0:07:27 > 0:07:30All the thermometers are at room temperature now.
0:07:30 > 0:07:35Let's put them in the beakers and see what happens. This one in there.
0:07:35 > 0:07:38So looking at the thermometers,
0:07:38 > 0:07:44- which beaker of water is the coldest? - This one, Nina, because
0:07:44 > 0:07:47- the line has gone down.- Yeah!
0:07:47 > 0:07:49On this one, the blue line is shortest
0:07:49 > 0:07:53which tells us the water is the coldest.
0:07:53 > 0:07:57Let's pop the snowflake on the beaker just so we remember. Good job!
0:07:57 > 0:08:01So this thermometer has the longest line
0:08:01 > 0:08:05up towards the top near the sun, so we know this water
0:08:05 > 0:08:09is the hottest. What about this thermometer?
0:08:09 > 0:08:14- What's happened to the blue line? - It stayed the same, Nina.
0:08:14 > 0:08:17It's still in the middle. It's neither hot nor cold
0:08:17 > 0:08:20which means it's room temperature!
0:08:20 > 0:08:24Amazing! Sometimes you don't have to touch something
0:08:24 > 0:08:26to see if it is hot or cold.
0:08:26 > 0:08:30Looking at a thermometer can tell you too.
0:08:30 > 0:08:34We know a thermometer can show us if something is hot or cold,
0:08:34 > 0:08:37we could use it to take the temperature in your tent.
0:08:37 > 0:08:42But that still doesn't answer your question about the tent.
0:08:42 > 0:08:45I've an idea for another experiment. Let's go!
0:08:47 > 0:08:48Have a look at this!
0:08:48 > 0:08:53This is a special camera called a thermal imaging camera
0:08:53 > 0:08:56and can tell us if something is hot or cold by the colours
0:08:56 > 0:09:02on this screen. I'm going to show you...some bags.
0:09:02 > 0:09:06They've been heated so they're hot, but they're safe.
0:09:06 > 0:09:10Now, let's just check they're hot by having a look at them
0:09:10 > 0:09:14- through the thermal imaging camera. - They're white!
0:09:14 > 0:09:18They are definitely hot. Loads of heat coming from them
0:09:18 > 0:09:23Over here, I have some newspaper, some clingfilm and...
0:09:23 > 0:09:25- A sock.- ..a sock! That's right.
0:09:25 > 0:09:29We're going to see what happens if we wrap these hot bags
0:09:29 > 0:09:34- with some different materials. - They all feel so different!
0:09:34 > 0:09:37Let's have a look at them through the camera.
0:09:37 > 0:09:39NINA GASPS Wow!
0:09:39 > 0:09:44Look at that! The bags have gone all different colours now.
0:09:44 > 0:09:49They look different colours depending on what they're covered in.
0:09:49 > 0:09:53Look at the clingfilm-covered bag. That's bright white
0:09:53 > 0:09:57so it's letting off lots of heat. But look at the bag
0:09:57 > 0:10:01- with the newspaper round it. - I can't see anything.
0:10:01 > 0:10:06It's almost invisible. The heat is trapped inside.
0:10:06 > 0:10:09That's because newspaper is a good insulator.
0:10:09 > 0:10:13It keeps heat in and makes it stay warmer for longer.
0:10:13 > 0:10:18So we've found out that insulation stops heat from escaping.
0:10:18 > 0:10:21Some materials are better insulators than others.
0:10:21 > 0:10:26Newspaper is a good insulator, but the clingfilm's not so good.
0:10:26 > 0:10:30If we insulate your tent with some good insulators,
0:10:30 > 0:10:34it'll keep the heat in and make it stay warmer for longer.
0:10:34 > 0:10:38So far, we've found out the best way to keep heat in
0:10:38 > 0:10:42is to use some type of insulation. But, actually, guys,
0:10:42 > 0:10:46you've already got on a really good form of insulation.
0:10:46 > 0:10:49- Can you guess what it is?- Clothes.
0:10:49 > 0:10:53Exactly right, your clothes. They help to insulate our bodies
0:10:53 > 0:10:57by trapping the heat close to our skin and keeping us warm.
0:10:57 > 0:11:03- Can you remember what the best insulator was?- Newspaper.
0:11:03 > 0:11:07Let's put lots of newspapers all over the floor of the tent
0:11:07 > 0:11:10to stop the heat escaping into the ground.
0:11:19 > 0:11:25Brilliant! We have insulated the floor of our tent with newspaper.
0:11:25 > 0:11:27But what about the rest of the tent?
0:11:27 > 0:11:32Heat can escape through the walls, but we can't put newspaper there.
0:11:32 > 0:11:36- Is there anything else we can use? - This sheet, Nina.- Ooh!
0:11:36 > 0:11:38This looks perfect!
0:11:38 > 0:11:41Ooh! All the way over.
0:11:48 > 0:11:53Oops, I nearly forgot, one last thing to keep the heat in...
0:11:53 > 0:11:57we need to close the door because heat can get of there as well.
0:11:57 > 0:12:01So to keep the heat in, you need to close the door.
0:12:01 > 0:12:05- We have insulated the floor and the walls. Will it be warmer?- Yeah.
0:12:05 > 0:12:07Well, let's see.
0:12:07 > 0:12:10NINA GASPS Brilliant, look at that!
0:12:10 > 0:12:14By insulating the tent, we've stopped the heat escaping
0:12:14 > 0:12:19- and that will keep it warmer for longer.- I can even take my hat off.
0:12:19 > 0:12:21Houses are bit like tents.
0:12:21 > 0:12:25It's easy to be warm in the house if you keep doors closed.
0:12:25 > 0:12:29If you're feeling chilly, wear some more clothes
0:12:29 > 0:12:34rather than turning the heating up. So we've answered your question.
0:12:34 > 0:12:39You can make your tent warmer by insulating it and keeping heat in.
0:12:39 > 0:12:43Put newspapers on the floor, a sheet on the wall
0:12:43 > 0:12:46- and zip up the door. - Bye, Nina!- Bye, Nina!
0:12:51 > 0:12:53# Help protect our planet
0:12:53 > 0:12:55# Go eco!
0:12:55 > 0:12:56# Go eco!
0:12:56 > 0:12:59# Walk to school or cycle
0:12:59 > 0:13:00# Go eco!
0:13:00 > 0:13:02# Go eco!
0:13:02 > 0:13:05# Turn off the tap switch off the light
0:13:05 > 0:13:08# Recycle what you can
0:13:08 > 0:13:11# Help protect our planet
0:13:11 > 0:13:12# Go eco!
0:13:12 > 0:13:14# Go eco!
0:13:14 > 0:13:16# Go eco! #
0:13:16 > 0:13:19It's been such a great day, man!
0:13:19 > 0:13:22The lines on the thermometer going up and down.
0:13:22 > 0:13:26It's amazing they can tell us temperature.
0:13:26 > 0:13:29I really enjoyed myself today.
0:13:29 > 0:13:33It was great seeing the thermal camera that showed you
0:13:33 > 0:13:35when things were hot or cold.
0:13:35 > 0:13:39It's been a marvellous day, feeling the different temperatures.
0:13:39 > 0:13:43Hot and cold, room temperature felt the best.
0:13:43 > 0:13:45I've had a brilliant day!
0:13:45 > 0:13:50Listening to the rustling and crinkly of the newspapers, fun!
0:13:50 > 0:13:52I've had a fabby day!
0:13:52 > 0:13:57I liked it when they were insulating the tent and keeping it warm!
0:13:57 > 0:14:02We've had a sensational time today. I hope you've enjoyed it too. Bye!
0:14:02 > 0:14:03Bye!
0:14:03 > 0:14:06Subtitles by Red Bee Media Ltd